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Paediatric peri-operative fluids — FRCA Final MCQ

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ModeratePaediatricPaediatric peri-operative fluidsFRCA Final

A 10-kg toddler is fasted for orchidopexy. Maintenance fluid is required during a long delay before theatre. Sodium is 139 mmol/L and glucose is 4.8 mmol/L. What is the most appropriate management?

Educational content. Not a substitute for clinical judgement or local policy.

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Correct answer: EUse isotonic maintenance fluid with glucose and monitor electrolytes

Modern paediatric peri-operative fluid practice favours isotonic solutions, often with glucose in younger children, to reduce hyponatraemia risk while preventing hypoglycaemia/ketosis. Hypotonic saline can cause iatrogenic hyponatraemia. Pure glucose solutions risk hyponatraemia and are not balanced maintenance fluids. Monitoring is important when fasting or surgery is prolonged.

Reference: APAGBI paediatric fluid guidance; RCoA GPAS paediatric anaesthesia 2022